A datum transfer method based on point measurement

A point measurement and reference transfer technology, applied in the field of navigation, can solve the problems of complex tooling procedures, high requirements for pentaprism processing and installation, etc., and achieve the effect of simple structure

Active Publication Date: 2017-10-31
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology

This method has high requirements for the processing and installation of the pentaprism, and the tooling procedure is complicated
In addition, it is also possible to use Invar flat crystal with autocollimator for parallel transfer, but this method is only suitable for short-distance transfer, and the error caused by the deformation of Invar flat crystal during long-distance transfer is also more obvious

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  • A datum transfer method based on point measurement

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Embodiment Construction

[0014] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0015] The present invention provides a reference transfer method based on point measurement. The idea is to use the principle that the normals of the mirrors are parallel and the attitudes of the mirrors must be the same, obtain the normals of the mirrors through the point measurement device, and then adjust the attitude of the mirrors. , so that the normals of the two reference mirrors are parallel, so that the postures of the reference mirrors are consistent, and the effect of reference transfer is realized. Because the normal line parallel principle adopted by the present invention realizes the transmission of the reference, its transmission distance is only related to the performance of the point measurement device 7, the farther the observation range of the point measurement device 7 is, the farther the reference transmission distance is.

[0016] A ...

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Abstract

The invention discloses a standard transmission method based on point measurement. The standard transmission method is used for obtaining the normals of mirror planes through point measurement according to the principle that if the normals of the mirror planes are parallel, the postures of the mirror planes are the same, so that the standard transmission method can realize standard transmission by adjusting the normals of a first standard mirror plane and a second standard mirror plane to be parallel to each other. The standard transmission method has the advantages that the related device is simple; the transmission distance is long; the phenomenon that standard transmission is difficult in the prior art as the mounting of a pentagonal prism is complex is avoided.

Description

technical field [0001] The invention relates to the field of navigation, in particular to a reference transfer method based on point measurement. Background technique [0002] In navigation and positioning, various Cartesian coordinate systems need to be established. It is a common way to use a reference mirror to mark the coordinate direction reference. In measurement, it is often necessary to reproduce the direction datum in another place, which requires the use of datum transfer. [0003] The commonly used reference transfer method is to use a pentaprism to perform two vertical transformations. However, the installation of the pentaprism requires tools such as an autocollimator and a parallel flat crystal. This method has high requirements on the processing and installation of the pentaprism, and the tooling procedure is complicated. In addition, it is also possible to use Invar flat crystals with an autocollimator for parallel transfer, but this method is only suitabl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 罗涛杨宗元王春王雪豹王亚波黄蔚
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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